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Weather April in Knoxville, United States of America Visitors to Knoxville during the month of April should plan on bringing a raincoat since it will be raining some days. The amount of rain is high with an average of 83mm (3.3in). The average maximum temperature lies around 16.0Â°C (60.8Â°F). This month is known as a chilly month.
April is marked by rising daily high average temperatures that range from 28 ÂºC to 33 ÂºC on most days of the month. During April, the average daily high temperature is 30 ÂºC. Daily average low temperatures vary between 19 ÂºC and 23 ÂºC, with an average daily low temperature of around 23 ÂºC.